Camera mounted two-way wireless personal video/audio communication system

1. A portable wireless communication system having a microphone, a speaker, a transmission/reception antenna, the communication system comprising: a video mode switch for selecting a desired one of X, N and R modes; a video signal control circuit for transferring a video signal from a camera circuit to a display circuit in the N mode, a video signal from a remote terminal, received through the antenna and a transmission/reception circuit, to the display circuit in the R mode and the video signal from the camera circuit to the display circuit and transmission/reception circuit and a video transmission on command signal to a transmission on/off control circuit in the X mode; the display circuit applying an output video signal from the video signal control circuit to a display to reproduce an image picked up by a camera; the camera circuit converting an image incident on a camera lens into an electrical video signal, adjusting the level of the electrical video signal according to the amount of light sensed by an optical sensor in such a manner that the electrical video signal can appropriately be viewed on the display and outputting the resultant video signal to the video signal control circuit, the camera circuit storing a still image of one shot focused on the camera lens in a video memory and outputting the stored still image to the video signal control circuit, if a still image switch is turned on, and outputting a moving image focused on the camera lens to the video signal control circuit if the still image switch is turned off; an audio signal control circuit for transferring an audio signal from the microphone to the transmission/reception circuit and outputting an audio transmission on command signal to the transmission on/off control circuit, if an audio transmission switch is turned on, and transferring an audio signal from the transmission/reception circuit to the speaker if the audio transmission switch is turned off; a channel selection switch for selecting a frequency for transmission/reception of the video and audio signals; the transmission/reception circuit modulating an amplified video signal or audio signal from the video signal control circuit or audio signal control circuit into a radio frequency signal at the frequency selected by the channel selection switch, transmitting the modulated radio frequency signal to the remote terminal through the antenna, receiving a radio frequency signal from the remote terminal through the antenna at the frequency selected by the channel selection switch, demodulating the received radio frequency signal into an audio signal or video signal, amplifying the demodulated audio signal or video signal and transferring the amplified audio signal or video signal to the audio signal control circuit or video signal control circuit; and the transmission on/off control circuit driving a video transmitter in the transmission/reception circuit in response to the video transmission on command signal from the video signal control circuit, changing the transmission/reception circuit to a video reception mode in response to the presence of no video transmission on command signal from the video signal control circuit, driving an audio transmitter in the transmission/reception circuit in response to the audio transmission on command signal from the audio signal control circuit and changing the transmission/reception circuit to an audio reception mode in response to the presence of no audio transmission on command signal from the audio signal control circuit.

2. The portable wireless communication system of claim 1 , wherein the housing has first and second portions, wherein the local camera is in the first portion which is rotatably connected to the second portion.

3. A portable wireless communication system having a microphone, a speaker, a transmission/reception antenna, the communication system comprising: a video mode switch for selecting a desired one of X, N and R modes; a video signal control circuit for transferring a video signal from a camera circuit to a display circuit in the N mode, a video signal from a remote terminal, received through the antenna and a video transmission/reception circuit, to the display circuit in the R mode and the video signal from the camera circuit to the display circuit and video transmission/reception circuit and a video transmission on command signal to a video transmission on/off control circuit in the X mode; the display circuit applying an output video signal from the video signal control circuit to a display to reproduce an image picked up by a camera; the camera circuit converting an image incident on a camera lens into an electrical video signal, adjusting the level of the electrical video signal according to the amount of light sensed by an optical sensor in such a manner that the electrical video signal can appropriately be viewed on the display and outputting the resultant video signal to the video signal control circuit, the camera circuit storing a still image of one shot focused on the camera lens in a video memory and outputting the stored still image to the video signal control circuit, if a still image switch is turned on, and outputting a moving image focused on the camera lens to the video signal control circuit if the still image switch is turned off; and the video transmission/reception circuit modulating an amplified video signal from the video signal control circuit into a radio frequency signal at a selected channel frequency, transmitting the modulated radio frequency signal to the remote terminal through the antenna, receiving a radio frequency signal from the remote terminal through the antenna at the selected channel frequency, demodulating the received radio frequency signal into a video signal, amplifying the demodulated video signal and transferring the amplified video signal to the video signal control circuit.

4. The portable wireless communication system of claim 3 , wherein the optical sensor and camera lens are installed in a head, the head being rotatably coupled with a terminal body by a support shaft.

5. A portable wireless communication system having a microphone, a speaker, a transmission/reception antenna, the communication system comprising: a main communication system comprising: a local camera disposed in a housing for the communication system; a video mode switch for selecting one of first, second, third modes; a camera circuit for converting an image incident on the local camera into a video signal; a display circuit for displaying images; a video signal control circuit for transferring the video signal from the camera circuit to the display circuit in the first mode, transferring the video signal from a remote terminal, received through the antenna to the display circuit in the second mode and transferring the video signal from the camera circuit to the display circuit and transmitting through the antenna in the third mode; a channel selection switch for selecting a frequency for transmission/reception of the video signal; a transmission/reception circuit for modulating an amplified video signal from the video signal control circuit into a radio frequency signal at the frequency selected by the channel selection switch, transmitting the modulated radio frequency signal to the remote terminal through the antenna; and a transmission on/off control circuit for controlling the transmission/reception circuit in response to the video signal control circuit.

6. The portable wireless communication system of claim 5 , wherein the remote terminal comprises a remote camera disposed in a housing; a camera circuit for converting an image incident on the remote camera into a video signal; a video signal control circuit for transferring the video signal from the camera circuit to the display circuit and transmitting through the antenna; a transmission circuit for modulating an amplified video signal into a radio frequency signal and transmitting the modulated radio frequency signal to the main communication system through the antenna; a channel selection switch connected to the transmission circuit for selecting a frequency for transmission of the video signal; and a transmission on/off control circuit for controlling the transmission/reception circuit in response to the video signal control circuit.

7. The portable wireless communication system of claim 5 , further comprising an audio signal control circuit for transferring an audio signal from the microphone to the transmission/reception circuit and for outputting an audio transmission on command signal to the transmission on/off control circuit when an audio transmission switch is enabled, and transferring an audio signal from the transmission/reception circuit to the speaker when the audio transmission switch is disabled.

8. The portable wireless communication system of claim 7 , wherein the transmission on/off circuit changes the transmission/reception circuit to a video reception mode in response to the presence of a no-video transmission on command signal from the video signal control circuit, drives an audio transmitter in the transmission/reception circuit in response to the audio transmission on command signal from the audio signal control circuit and changes the transmission/reception circuit to an audio reception mode in response to the presence of no-audio transmission on command signal from the audio signal control circuit.

9. The portable wireless communication system of claim 7 , wherein the transmission/reception circuit receives a radio frequency signal from the remote terminal through the antenna at the frequency selected by the channel selection switch, demodulating the received radio frequency signal into an audio signal, amplifying the demodulated audio signal and transferring the amplified audio signal to the audio signal control circuit.

10. The portable wireless communication system of claim 7 , wherein the transmission/reception circuit modulates an audio signal from the audio signal control circuit into a radio frequency signal at the frequency selected by the channel selection switch, transmitting the modulated radio frequency signal to the remote terminal through the antenna.

11. The portable wireless communication system of claim 5 , wherein the transmission/reception circuit receives a radio frequency signal from the remote terminal through the antenna at the frequency selected by the channel selection switch, demodulates the received radio frequency signal into the video signal, amplifies the demodulated video signal and transfers the amplified video signal to the video signal control circuit.

12. The portable wireless communication system of claim 11 , further comprising an audio signal control circuit for transferring an audio signal from the microphone to the transmission/reception circuit and for outputting an audio transmission on command signal to the transmission on/off control circuit when an audio transmission switch is enabled, and transferring an audio signal from the transmission/reception circuit to the speaker when the audio transmission switch is disabled.

13. The portable wireless communication system of claim 12 , wherein the transmission on/off circuit changes the transmission/reception circuit to a video reception mode in response to the presence of a no-video transmission on command signal from the video signal control circuit, drives an audio transmitter in the transmission/reception circuit in response to the audio transmission on command signal from the audio signal control circuit and changes the transmission/reception circuit to an audio reception mode in response to the presence of no-audio transmission on command signal from the audio signal control circuit.

14. The portable wireless communication system of claim 12 , wherein the transmission/reception circuit receives a radio frequency signal from the remote terminal through the antenna at the frequency selected by the channel selection switch, demodulating the received radio frequency signal into an audio signal, amplifying the demodulated audio signal and transferring the amplified audio signal to the audio signal control circuit.

15. The portable wireless communication system of claim 12 , wherein the transmission/reception circuit modulates an audio signal from the audio signal control circuit into a radio frequency signal at the frequency selected by the channel selection switch, transmitting the modulated radio frequency signal to the remote terminal through the antenna.

16. The portable wireless communication system of claim 5 , wherein the camera circuit stores a still frame image in a video memory and outputs the stored still frame image to the video signal control circuit when a still image switch is enabled, and outputs a moving image detected by the camera to the video signal control circuit when the still image switch is disabled.

17. The portable wireless communication system of claim 5 , wherein the camera circuit adjusts the level of the electrical video signal according to the amount of light sensed by an optical sensor in such a manner that the electrical video signal can appropriately be viewed on the display and outputting the resultant video signal to the video signal control circuit.

18. The portable wireless communication system of claim 5 , wherein the housing has first and second portions, wherein the local camera is in the first portion which is rotatably connected to the second portion.

19. The portable wireless communication system of claim 5 , wherein the channel selection switch selects a frequency for transmission/reception of audio signal.